test(version-control-systems): Do not test submodules on ORT's repo

Do not rely on the ORT repository to contain submodules. As recursive
cloning is already covered by `DefaultNestedProvenanceResolverFunTest`
and `GitRepoDownloadFunTest`, simply remove the test.

Signed-off-by: Sebastian Schuberth <[email protected]>

Author: sschuberth

plugins/version-control-systems/git/src/funTest/kotlin/GitWorkingTreeFunTest.kt

@@ -33,7 +33,6 @@ import kotlin.time.Duration.Companion.milliseconds
 
 import kotlinx.coroutines.delay
 
-import org.ossreviewtoolkit.downloader.VersionControlSystem
 import org.ossreviewtoolkit.downloader.WorkingTree
 import org.ossreviewtoolkit.model.VcsInfo
 import org.ossreviewtoolkit.model.VcsType
@@ -93,18 +92,6 @@ class GitWorkingTreeFunTest : WordSpec({
                 "tag3"
             )
         }
-
-        "correctly lists submodules" {
-            val expectedSubmodules = listOf(
-                "plugins/package-managers/pub/src/funTest/assets/projects/external/dart-http",
-                "plugins/package-managers/python/src/funTest/assets/projects/external/example-python-flask",
-                "plugins/package-managers/python/src/funTest/assets/projects/external/spdx-tools-python",
-                "plugins/package-managers/sbt/src/funTest/assets/projects/external/multi-project",
-                "plugins/package-managers/stack/src/funTest/assets/projects/external/quickcheck-state-machine"
-            ).associateWith { VersionControlSystem.getPathInfo(File("../../../$it")) }
-
-            git.getWorkingTree(File("..")).getNested() shouldBe expectedSubmodules
-        }
     }
 
     "updateWorkingTree()" should {